Shoe-sewing machine.



F. CHATEAUNEUF.

SHOE SEWING MACHINE.

APPLICATION FILED DEC. 7| 19131 1,2%@941 Patented Sept. 25, 1917.

SHOE SEWING MACHINE.

APPLICATION FILED 1156.11.1913.

Patented; Sept. 25, 91?.

3 SHEETS-.SHEET 2.

F. CHATEAUNEUF.

SHOE SEWING MACHINE.

APPLICATION FILED Dsc. I7. IsIs.

Patented Sept. 25, 1917,.

@mw E MyWay JERSEY.

FRANK CHATEAUNEUF, OF HAVERI-IILI, MASSACHUSETTS, ASSIGNOR TO UNITEDSHOE MACHINERY COMPANY, OF PATERSON, JERSEY, A CORPORATION OF `NEIN'SHOE-SEWING MACHINE.

Specification of Letters Patent. 'n Patented Sept. 25, 1917.

Application filed December 17, 1913. Serial N o. 807,216.

To all whom t may concern:

Be it known that, I, FRANK CHATEAUNEUF, a citizen of the United States,residing at Haverhill, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements inShoe-Sewingv Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention relatesto shoe sewing machines, and more particularly toshoe sewing machines provided with a curved hook needle, and employed inlsewing soles to the uppers of boots and shoes.

Machines of this class are usually provided with a back gage againstwhich the shoe rests ,during a part of each cycle of operations, andwhich supports the shoe against the backward pull of the needle as theneedle retracts from the work. In the operation of such machines, theback gage is retracted away from the shoe in each cycle of operationsduring the feeding of the shoe, so that the upper will not be rumpled bycontact of the back gage therewith, and is then moved forward intocontact with the shoe and locked in operating position during theretracting movement of the needle. The devices for supporting andactuating the back gage in machines heretofore constructed have been soconnected with the back gage that there was no relative movement oryield between the back gage and said devices when the back gage engagedthe shoe, and the entire thrust of these devices was therefore taken bythe shoe.- A spring has ordinarily been employed to actuate the saiddevices to move the back gage into contact with the shoe.` These deviceshave been comparatively heavy in construction, so that in order toactuate the back gage with sutlicient rapidity, it has been necessary toemploy a com- I paratively heavy spring to move the back gage forwardtoward the shoe. The result of the above construction and mode ofoperation of the back gage has been that the back gage pounds or hammersagainst the shoe during the sewing operation, and makes it ditlicult forthe operator to hold theshoe infproper. position...

v shoes.

The primary object of the present invention is to provide shoe sewingmachines of the above class with an improved back gage mechanism whichwill obviate the pounding of the back gage against the shoe. lith thisand other objects in view, the invention comprises various novel andimproved features set forth in the following descriptiony and pointedout in the claims, the advantages of which will be obvious to oneskilled in the art. f

In the drawings illustrating a machine embodying the various features ofthe invention in their preferred forms, Figure 1 is a view in sideelevation of the machine; Fig. 2 is a view in side elevationillustrating a portion of the machine lookingfrom the same sideof themachine as in Fig. 1'; Fig. Sis a detail sectional 'view-takensubstantially on the line 3 8 of Fig. 5. Fig. 4 is a detail sectionalVview taken substantially on the line 4--4 of Fig. 5; Fig. 5 is a detailview, partly in side elevation and partly in section, illustrating aportion of the backV 4gage mechanism; Fig. 6-is a detail view partly infront elevation and partly in section illustrating a portion of the backgage mechanism; Fig. 7 is a sectional View taken substantially on theline 7-7 of Fig. 6;- F ig. 8 is a view in side elevation illustrating aportion of the machine looking from the side of the machine oppositethat from which Figs. l and 2 were taken; and Fig. 9 is a view in frontelevation of the mechanism illustrated in Fig. 8.

rIlhe machine embodying the various features of the invention asillustrated in the drawings is a curved hookneedle shoe sewing machineAdesigned particularly for sewing together the uppers and insoles ofturnedv shoes, although with slight changes it may be employed in sewingthe inseams of welted The curved hook needleindicated at 2, and thelooper l of the machine illustrated, are constructed and arranged in thesame manner and operated by .the same mechanism as the needle and looperof the machine illustrated and described in the United States patentgranted to Andrew Eppler, No. 1,108,560, dated August'Q, 1914. Theneedle guide indicated at 6 is mounted upon a stud 8 coaxial with the fneed-le, to the. end ot'wlfrieh stud/vis attached an arm 10. ln themachine illustrated, the mechanism for movingy the needle guide forwardwith the needle as the needle advances to pierce the work has a yieldingconnection with the needle 'guide so that the needle guide may yieldrelatively to said mechanism after it contacts with the shoe. Thismechanism comprises a pair of links 12 and 14, and a tension spring 16connecting thearm 10 with a pin 18 mounted on the forwardly extendingarm of an oscillating lever 20 pivoted on the stud 22, said levercarrying at its forward end a roll 24 for engagement with the links.This. lever is provided with a rearwardlyy extending arm which carries acam roll 26 engaginga cam groove in a cam carried by the main shaft 26aof the machine. As the forward end lof the lever 20 swings downwardly,the

needle guide is moved forwardly in timedy relation to the forwardmovement of the needle, and when the needle guide strikes the work thespring 16 yields, allowing the needle guide to remain stationary duringthe further movement of the leverv 20. The above mechanism for movingthe needle guide forwardly acts to advance the needle guide with theneedle until the needle guide engages the shoe, regardless of thethickness of the'work at the point of operation.. and

` the guide therefore supports the needle close to the point thereofwhen the needle is penetrating the work, at which time it is subjectedto the greatest strain. As the needle retracts from the work, the needleguide is retracted just before the barb of the needle is withdrawnwithin the perforation in the guide, by the engagement of an abutmentscrew 28, mounted on an arm 30 secured to the needle guide by a screw 82with the face 34 of the needle segment 36. The abutment screw 28 isthreaded into the arm 30, so that it may be adjusted with relation tothe arm to regulate the manner in which the needle guide is actuated,Isaid abutment screw being held in adjusted position by a lock nut 38.

The machine is provided with two thread arms which operate insubstantially the same manner as the thread arms of the machinedisclosed in applicantsl Patent No. 900,853., dated October 6, 1908. Oneof these thread arms is indicated at 42, and is adjustably mounted upona stud 44 iournaled in the frame of the machine. secured an arm 46,which is connected by a link 48 with an arm 50 of a three-armed leverpivoted on a stud 52. rlhe rear end of the link 48 is connected with thearm 50 by a pin or bolt 5,4 adjustably secured in a slot 56 in the arm.This lever is provided with a second arm 58-which carries a cam roll 60engaging a cam groove in a cam disk -on the main shaft 26ai The otherthread arm indicated at 62 is mounted upon the lower end vOtan 6.4.fixed to a stud 66.- iournaled in To this stud isv substantially thesame manner as described f inthe above Chateauneuf patent. Theadjustable connection between the link 48 and the arm 50, and betweenthe link and the arm 72, enables the amplitudes of movements of therespectivethread arms to be suitably regulated.

The back gage which engages the shoe adjacent the sewing pointl duringthe sewing i operation, and supports the shoe against the backwardthrust of the needle, is indicated at 7 8. As shown particularly inFigs. 2 and 8, the back gage is provided with a gro ve in which theneedle operates,.so that the back gage engages the shoe on each side ofthe needle. The back gage is mounted upon a'carrier 8O which is pivotedupon a stud 82 located above and in front of' the axis of the needle,and the back gage is moved toward and from the work by swinging thecarrier upon its pivot. As stated above the back gage is moved away fromthek shoe during each cycle of operations as the shoe is fed, so thatthe upper will not be rumpled by the contact of the back gage therewithduring the feed movement or the shoe. After the shoehas been fed, andbefore the needle retracts after haifing penetrated the work, the backgage is moved forward so as to support the slice during the retractingmovement of the needle. The mechanism for operating the back gage inthis manner comprises an actuator 84 which in the constructionillustrated consists of a slide mounted for forward and rearwardmovement in suitable guides on the frame .of the machine, and connectedby link 86 with the carrier 8G. The slide 84 is moved forwardly andrearwardly to move the back gage toward and from the shoe, by theoscillation of a lever 88 pivoted on a stud 90 and connected with theslide by a link 92. The low-er arm of the lever 88 is provided with aslot 94, and the link 92 is lconnected with the lever by a pin or bolt96 adjustably secured in the slot.

The throw lof the slide 84 may be regulated l by changing the positionof the bolt 96 in the slot 94. In order to enable the position of thelimits of movement of the slide 'to be regulated. the slide is providedwith' a slot as the back gage calaier-y is Inovedforward to bring theback gage into contact with the shoe, the back gage is permitted toyield relatively to the carrier after it engages the shoe. To this endthe back gage is secured to and preferably formed integral with adovetail slide 102 mounted to slide forwardly and rearwardly vinsuitable guides in the carrier 80. A light spring 104, having one of itsextremities engaged inthe carrier, and the other engaged in the slide,is provided to move'the back gage normally in a forward direction withrelation to tbe carrier. A. block 106 is secured to the slide 102 by ascrew'108, and engages a face 110 on the carrier to limit the forwardmovement ofthe back gage with relation to the carrier. To allow vtheblock 106 to be adjusted on the slide, the block is provided with aslot, as shown in Fig. 3, through which the screw 108 is passed. A. pin112 mounted on the slide, and engaging a groove in the block 106,prevents the block from turning on 'the screw 108.

A locking mechanism is provided to lock the slide 102 in the guides inthe carrier and thereby lock the back gage to the carrier and to theactuator which acts in timed relation to the movements of the actuatorand carrier in the following manner: Starting at a point in a cycle ofoperations with the actuator 84 and the carrier retracted, so that theback gage is withdrawn out of contact with the slice, the slide 102 isunlocked with relation to the carrier, and the back gage is held in itsforward position in the carrier with the block 106 engaging theI stopface 110 on the carrier by the spring 104. After the feed has takenplace, the carrier is swung forwardly to bring the' back gage intocontact with the shoe, and? the slide 102, and arranged to engage a thinwear plate 118 interposed between the eccentric portion of the lockingpin and the slide. The slide is locked in the carrier by rotating thepin 114,*thereby binding the wear plate 118 against the slide. An arm120 is attached to the outer end of the pin 114, and is connected by alink 122 with an arm 124- pivoted on the stud 22. A second arm 126 ispivoted on the stud 22, and is connected with the arm 124 by means of aspring 128 coiled aboutthe hubs of the arms 124 and 126, and having itsrespective extreinities attached to said arms, as shown as the back gageengages the shoe its move-l ment is arrested and the carrier nio-vesfor,k ward independently of the back gage, the 3;2

spring 104 yielding to permit this relative ,i movement between thecarrier and the'baci gage.

limit of its forward movement, and bebecome worn by use.

l/Vhen the carrier has reached the gglhub of the arin'126, and as thearm v126 particularly in Figs. 2, 6 and 7, so that it tends to swing thearms 124 and 126 together or into alinement. By swinging the arm 126rearwardly on the stud 22, thearm 124 is yieldingly actuated through thespring 128 to turn the locking pin in a direction to lock the back gageslide 102 in the carrier. The arm `126 is connected by a link 130 withan oscillatory lever 132 pivoted on a stud 134, and carrying a cam roll136 which engages a cam groove 138 in a cam disk carried on the shaft26a. TVVhen through the movement of the lever 132 the arm 126 is'swungrearwardly, the arm 124 through the spring 128 is yieldingly actuated torotate the stud 114 in a direction to lock the slide 102 to the carrier.The extent of the rearward swinging orlocking movement of the arm 126 isin excess `of that required to lock the back gage to the carrier, themovement of the arm 126'after the gage is locked to the carrier beingtaken up by the yield of the spring 128.

The provisionof the spring 128 in the mechanism for actuating thelocking pin to lock the back gage to the carrier insures the `locking ofthe to the carrier in a re- |liable manner, and obviates the necessityof frequent readjustineiit of the parts as they The hub of the arm i124is provided with a laterally extending ,lug 140 which operates in arecess in the fore the needle yetmetg, the beck gege is swung forwardlythe `forward face 142 is locked to the carrier and remains locked thework. to move the back gage away from the shoe, the back gage isunlocked with relation to the carrier, and the back gage is moved? awayfrom the shoe during the retracting movement of the carrier after thestop face 110 of the carrier engages the block 106.v rlhe back gageremains unlocked until the carrier has again advanced to bring the backbeen described. The mechanism for locking the back gage to the carrierin the manner above described comprises a locking pin 114 journaled inthe` carrier, and provided with an eccentric portion .116 locatedlopposite gage into contact with the work, as has just 'iv-fof therecess in the hub of the arm 126 enuntil after the needle has retractedfromF-flgages the opposed face 144 of the lug 140, Before the carrier isretracted land the arm 124 is thereby swung forwardly that the termbackgageemployed in the claims does not limit the invention to a machinefor operating upon turned shoes, but that 'this term also covers thewelt guide of a machine fitted for welted work.

The back rest which assists in supporting `the shoe during the sewingoperation is described one form of machine in which ity ing a curvedhook needle, a back gage, a-

back gage slide, means for moving the slide to advance and retract theback gage, a conneet-ion between the back gage and the slide permittingthe back gage to yield with ielation to the `slide after the back gageengages the shoe, means tending to move the back gage forwardly withrelation to the gslide, and means controlled independently ing a curvedhook needle, a back gage, a

back gage slide, means for moving the slide to move the back gage towardand from the shoe, a connection between the back gage and the slidepermitting the back to yield with relation to the slide after the backgage engages the shoe, means tending to move the back gage forwardlywith. relation to the slide, and means acting independently of the'movement of the slide for ,locking the back gage in operating'position.

3. A shoe sewing machine, having, in coinbination, stitch formingdevices-including a curved 'hook needle, a back gage, a back gage slide,positively acting means for moviing the slide to move the back gagetoward and from the shoe, a connection between the back gage and theslide permitting the back gage to yield with relation to the slide afterthe back gage engages the shoe, and means controlled independently ofthe work for locking the back gage in operating position.

4. A shoe sewing machine, having, in combination, stitch forming devicesincluding a curved hook needle, a back gage, a Vback gage slide,positively acting means for moving the slide to move the back gagetoward and from the shoe, a connection between the back gage and theslide permitting the back 'gage' to yield with relation to shoe andmeans acting independently of the movement of. the slide for locking theback gage in operating position.

5. Ashoe sewing machine, having, in combination, stitch forming devicesincluding a curved hook needle, a back gage, a back gage slide, meansfor moving the slide `in a path having definite limits to move the backgage toward and from the shoe, a connection between the back gage andthe slide permitting the back gage to yield with relation to the slideafter the back gage engages the shoe, and means controlled independentlyof the work for locking the back gage in'oper- .ating position.

6. A shoe sewing machine, having,in combination, stitch forming devicesincluding a curved hook needle, a back gage, a back gage slide, meansfor moving the slide to advance and retract the back gage, a connectionbetween the back gage and the slide constructed to permit the backgageto yield with relation to the slide when the back gage engages the shoe,and means controlled independently of the work for lock'- ing the backgage in operating position.

A shoe sewing' machine, having, in combination, stitch forming devicesincluding a curved hook needle, a back gage, a back gage slide, meansfor movingfthe slide in a path havingdeinite limits to move thev backgage toward and from the shoe, and a connection between the back gageand the slide permitting the back gage to yield with relation to theslide after the back gagel engages the shoe. 4

S. A shoe sewing machine, having, in combination, stitch` formingdevices including a curved hook needle, a back gage, a back gage slide,means for moving the slide to advance and retract the back` gage, aconnection between the back gage and the slide constructed to permittheback gage to yield with relation to the slide when the back gageengages the shoe, and means acting independently of` the movement of theslide telook the back gage in operating position.

9. A shoe sewing machine, having, in coinbination, stitch formingdevices including a curved hook needle, a back gage, a back gage slide,positively acting nieansfor advancing and retracting the slide to movethe v back gage toward and from the shoe, and a connection between theback gage and the slide permitting the back gage to yield with relationto the slide after it engages the shoe.

10. A slice sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a

' back gage slide, means for moving the slide in a path `having definitelimits to move thev back `gage toward and from the shoe,a coniiection,hetweenfthehack gage and the slide los permitting the back gage toyield with re-' lation to the slide after the back gage engages theshoe, and means acting independently oi the movement of the slide forlocking the bacl; gage in operating position.

11. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a. back gage slide,positivelyT acting means for advancing and retracting the slide to movethe back gage toward and from the shoe, a connection between the backgage and the slide permitting the back gage to yield with relation tothe slide after it engages the shoe, and means for locking the back gagein operating position.

12. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage carrier, a back gagemovably mounted on the carrier so that it is permitted to yield withrelation to the carrier a-ter it engages the shoe, an actuator connectedwith the carrier for moving the carrier to move the back gage toward andfrom the shoe, and means for locking the back gage to the carrier duringeach cycle of operations.

13. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage carrier, a back gagemovably mounted on the carrier so that it is permitted to yield withrelation to the carrier after it engages the shoe, an actuator connectedwith the carrier for moving the carrier to move the back gage toward andfrom the shoe, means for locking the back gage to the carrier duringeach cycle of operations, and means tending to move the backgage-forward with relation to the carrier with a comparatively lightpressure.

14. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a carrier therefor,a connection between the back gage and the carrier permitting the backgage to yield with relation to the carrier after the back gage engagesthe shoe, and means for locking the back gage with relation to thecarrier during each cycle of operations.

15. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage carrier, a back gagemovably mounted on the carrier so that it is permitted to yield withrelation to the carrier after it engages the shoe, an actuator connectedwith the carrier for moving the carrier to move the back gage toward andfrom the shoe, and means for locking the back gage in operatingposition.

16. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a back gage slide,a connection between the back gage and the slide permitting the backgage to yield with relation to the slide after the bach gage engages theshoe, and means controlled independently of the work for locking theback gage to the slide.

FRANK CHATEAUNEUF.

Witnesses i MAY A. HURLEY, KATHLEEN C. UNIAC.

Copies of this patent may be obtained for five ce1-.ts each, byaddressing the Commissioner of Patents, Washington, D. C.

